CVE-2023-3990Public exploitNetwork attack vector

Authenticated script execution via unescaped style parameter

Published Jul 28, 2023 · Updated Aug 2, 2024

Reflected XSS in MingSoft MCMS 5.3.1 and earlier allows remote authenticated users to run script in a victim's browser via search.do. The HTTP POST handler reflects the style parameter into its response without neutralizing HTML or script markup. A valid session and victim interaction are required, bounding impact to data access or actions available in the victim's browser context.

CVSS severity6.1
Medium
EPSS probability1.43%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Reflected XSS in MingSoft MCMS 5.3.1 and earlier allows remote authenticated users to run script in a victim's browser via search.do. The HTTP POST handler reflects the style parameter into its response without neutralizing HTML or script markup. A valid session and victim interaction are required, bounding impact to data access or actions available in the victim's browser context.

The record

CVE
CVE-2023-3990
Published
Jul 28, 2023
Updated
Aug 2, 2024
Vendor
MingSoft
Product
MCMS
Classifications
CWE-79
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jul 28, 2023CVE publishedPublication date reported by the CVE source.
  2. Aug 2, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=5.3.0
  2. Affected versionversion=5.3.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

MingSoft · MCMSversion=5.3.0; version=5.3.1

Published CVSS scores

3.5GitHubCVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:N
6.1NISTCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
3.5VulDBCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo